$29.$ The total $\_\_\_$ length of a broach determines the maximum depth of cut it can achieve.

$30.$ High$-$speed steel and $\_\_\_$ are common materials used for manufacturing milling cutters.

$31.$ Drill bits designed for milling have enhanced $\_\_\_$ resistance to withstand lateral forces.

$32.$ The point angle of a twist drill affects the tool's suitability for different $\_\_\_$ materials.